Home / 21,485.88-32,201.12-9,631

Finding the Fourth Proportional to 21,485.88, 32,201.12 and 9,631

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Solution

The fourth proportional to 21,485.88, 32,201.12 and 9,631 is: 14,434.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,485.88 : 32,201.12 = 9,631 : x
  2. Step 2: Convert to fraction form
    21,485.88/32,201.12 = 9,631/x
  3. Step 3: Cross multiply
    21,485.88x = 32,201.12 × 9,631
  4. Step 4: Simplify right side
    21,485.88x = 310,128,986.72
  5. Step 5: Solve for x
    x = 310,128,986.72/21,485.88
  6. Step 6: Final answer
    x = 14,434.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.